Finding the Fourth Proportional to 3,952.72, 5,931.11 and 1,978.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,952.72 : 5,931.11 = 1,978.62 : x
2. Step 2: Convert to fraction form
   3,952.72/5,931.11 = 1,978.62/x
3. Step 3: Cross multiply
   3,952.72x = 5,931.11 × 1,978.62
4. Step 4: Simplify right side
   3,952.72x = 11,735,412.87
5. Step 5: Solve for x
   x = 11,735,412.87/3,952.72
6. Step 6: Final answer
   x = 2,968.95